/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.db.queryengine.plan.relational.utils.matching;

import java.util.Objects;

import static com.google.common.base.MoreObjects.toStringHelper;
import static java.util.Objects.requireNonNull;

public final class Match {
  public static Match of(Captures captures) {
    return new Match(captures);
  }

  private final Captures captures;

  private Match(Captures captures) {
    this.captures = requireNonNull(captures, "captures is null");
  }

  public <T> T capture(Capture<T> capture) {
    return captures().get(capture);
  }

  public Captures captures() {
    return captures;
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    Match match = (Match) o;
    return Objects.equals(captures, match.captures);
  }

  @Override
  public int hashCode() {
    return Objects.hash(captures);
  }

  @Override
  public String toString() {
    return toStringHelper(this).add("captures", captures).toString();
  }
}
